心软是病不治要命
[xīn ruăn shì bìng bù zhì yào mìng]
"A soft heart is an incurable disease" expresses self-mockery on being over-sympathetic or overly gentle towards others, which might sometimes put oneself in a disadvantaged position in interpersonal relations. The owner of such nickname tends to think this personality is their Achilles' heel, and can also hint at helplessness for certain situations.